摘要 |
FIELD: general mechanical engineering; power-plant engineering. SUBSTANCE: coupling includes two flanged rigid half-couplings and connecting bolts fitted in holes of half-coupling flanges; mounting surfaces of holes and bolts have form of out-of-round cylinder, ellipse, for example whose cross-sections are similar and dimensions correspond to the following relationship: Δ = D<SB>max</SB>-d<SB>max</SB>= D<SB>min</SB>-d<SB>min</SB>, where Δ is mounting clearance; in assembly of coupling, centers of bolts and axes of symmetry of cross sections of bolts and holes coincide; then bolts are turned relative to holes through angle <EMI ID=0.283 HE=9 WI=15 TI=CHI>, where Z for ellipse is equal to 2; negative interference delta = d<SB>max</SB>-D<SB>min</SB> shall be ensured; D<SB>max</SB>, and D<SB>min</SB> are larger and smaller diameters of elliptical mounting surface of holes of half-coupling; d<SB>max</SB> and d<SB>min</SB> are larger and smaller diameters of elliptical mounting surface of holes of connecting bolts. EFFECT: enhanced durability due to repetition of assemblies and high resistance to impact loads. 3 cl, 2 dwge
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